Container Image Scanning and Software Supply Chain Security (SBOM)
Integrating vulnerability scanning into CI/CD pipelines, signing images with Cosign, and enforcing software bill of materials (SBOM) policies.
The Vulnerability in Base Container Images
Developers frequently pull base Docker images (`node:latest`, `python:3.9`) that contain hundreds of outdated operating system libraries, vulnerable OpenSSL versions, and unpatched CVEs.
Automating Vulnerability Scanning with Trivy and Grype
Integrate automated container image scanning directly into GitHub Actions or GitLab CI. Break builds automatically whenever critical or high CVEs with available vendor fixes are detected.
Cryptographic Image Signing with Cosign & Sigstore
Sign verified production container images cryptographically using Cosign. Configure Kubernetes admission controllers (such as Kyverno or OPA Gatekeeper) to reject any container image that lacks a valid signature from your internal build pipeline.
Related Articles & Advisories
AWS IAM Architecture: Enforcing Least Privilege with Permission Boundaries
A technical blueprint for preventing privilege escalation, eliminating wildcards (*), and enforcing guardrails across multi-account AWS Organizations.
Hardening Azure Virtual Networks: NSGs, ASGs & Azure Bastion Architecture
Eliminating public IP addresses from backend virtual machines and securing administrative access using managed browser tunnels.
Kubernetes Security: Pod Security Standards, Network Policies & Strict RBAC
Preventing container escape, restricting service account tokens, and implementing micro-segmentation across EKS, AKS, and bare-metal clusters.